agreement under section 13 b

Hi All,

I am fighting 498a,maintenance for last 5 years.Her father has filled 498a compalaint case and maintenace case from his home town.The current status of 498a is it is not charged and has stay from high court.Now with third party mediation we reach at compromise where we have to pay 5 lakh as one time alimoney under section 13 b.We facing problem in this because early her father has broken othere agreements done .My question is what is procedure to pay alimoney amount under section 13 b.?Because under section 13b ,court gives 6 months reconcillation time.My doubt is that if she get money within this timne she may withdraw the petion period.Please advice how to give amount so that she cannot withdraw before final divorce.